/Engine/Source/Editor/EditorWidgets/Public/SAssetDropTarget.h
Called when we need to check if an asset type is valid for dropping
typedef TBaseDelegate_OneParam< bool, [TArrayView](API\Runtime\Core\Containers\TArrayView)< [FAssetData](API\Runtime\CoreUObject\AssetRegistry\FAssetData) > > FAreAssetsAcceptableForDrop